OutBack Power Technologies, Inc., a leading designer and manufacturer of advanced power electronics for backup and renewable energy, has introduced the first sealed, outdoor- rated maximum power point tracking (MPPT) charge controller. Based on a passive cooling design, the FLEXmax Extreme provides full power output from -20 to 45 degrees Celsius without requiring a cooling fan, allowing for a sealed unit that effectively protects sensitive components from outside contaminants including dust, dirt and insects.